高强度LC4CZ铝合金FSW接头腐蚀性能研究
首发时间:2007-06-13
摘要:利用ASTM G34 标准研究了LC4铝合金FSW接头的腐蚀蚀行为。结果表明,LC4铝合金FSW接头对剥蚀敏感,焊缝热机影响区最易受腐蚀。铝合金FSW街头焊接缺陷“弱连接”对剥蚀影响很大。
关键词: LC4CZ FSW接头 焊接缺陷; 剥落腐蚀
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Characterization of corrosion behaviors in friction stir welded joint of LC4
Abstract:In this paper the corrosion behaviors of friction stir welded aluminium alloys joint, LC4CZ, have been investigated using accelerated test (ASTM G34 EXCO). The test showed that the FSW joint of LC4CZ was sensitive to exfoliation corrosion. Corrosion testing revealed that the edge regions of the thermo-mechanically affected zone were most susceptible to corrosion. The accelerated test proved that the defects in friction stir welded joint often referred to as “Kissing Bond” had the lethality danger to the corrosion property.
Keywords: LC4 FSW joint welding defects exfoliation corrosion
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No.1343112072511817****
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